(-1/5) (-7/2) (-1/3)

La calculatora es muy conveniente para este:)

(-1/5) (-7/2) (-1/3)

= (-1/5) * (-7/2) * (-1/3)

$${\mathtt{\,-\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{5}}}}\right){\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{7}}}{{\mathtt{2}}}}\right){\mathtt{\,\times\,}}{\mathtt{\,-\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right) = {\mathtt{\,-\,}}{\frac{{\mathtt{7}}}{{\mathtt{30}}}} = -{\mathtt{0.233\: \!333\: \!333\: \!333\: \!333\: \!3}}$$